Web winding apparatus



g- 15, 1967' o. H. JONES 3,3359% WEB WINDING APPARATUS Filed May 6, 1965 United States Patent 3,335,972 WEB WINDlNG APPARATUS Owen Herbert Jones, Backwell, Somerset, England, as-

signor to Beasley, French & Company Limited, Bristol, England, a company of Great Britain and Northern Ireland Filed May 6, 1965, Ser. No. 453,613 Claims priority, application Great Britain, May 8, 1964, 19,392/64 3 Claims. (Cl. 242-55) ABSTRACT OF THE DISCLOSURE This application involves an apparatus for winding web material onto a reel which includes means for applying suction to draw away a laminar film of air on the web as it is being wound on to the reel.

This invention relates to the winding up of Web material, for example, paper, cellulose acetate, film, polyfilm, and the like, into reel form.

In present practice it is well known that severe telescoping of the web can occur on the reel after the web has been laid on, and guiding means at the reel cannot do anything to obviate this. The effect is even more marked when winding up non-porous materials such as film than when using porous material, such as paper, and is due to the entrapped air between the layers being unable to escape through the web itself, as happens with paper to a certain degree. Instead the air is squeezed out through the sides, and the several layers of the reel can slide on each other. Furthermore when reeling up paper it is usual to work with considerably more tension than can be used in winding up films. It is well known to run a weighted roller or rollers, on the reel being wound up, but this is only partially eflective. The object of this invention is to eliminate or reduce the said telescoping eiiect of wound webs.

The invention comprises an apparatus including a suction device arranged in close proximity to the nip where the web is laid on the reel. The suction device may include one or more flexible nozzles applied between the top layer of the reel and the reel itself.

According to one form of the invention in reel to reel working, we use a suitably shaped suction nozzle, either of sintered material or of nonporous material, with the necessary openings to allow the air to be withdrawn, so mounted as to follow the path of the nip where the mate rial is laid on the reel during the whole operation of winding up from the small starting diameter to the finished diameter of the reel being wound.

In continuous winding up operations using splicing means to sever the web to the finished size reel, and starting winding up on another prepared core, a suction nozzle is mounted so as to be clear of the prepared core during running up preparatory to splicing the change over, and means are provided to lower it on to the started reel after at least a completed revolution. Alternatively, the nozzle is positioned to be clear of the prepared core, by means of an adjustable stop, and the operation of winding up brings the reel into contact with the nozzle after suflicient layers have been wound on.

According to another form of this invention one or more flexible nozzles are used. In this case the nozzle or Patented Aug. 15, 1967 nozzles is/are applied between the top layer of the reel and the reel itself. Such an arrangement is shown in the drawing filed herewith wherein:

151G. 1 is a diagrammatic side view of the apparatus an FIG. 2 is a diagrammatic plan.

Referring to the drawing the reel core 2 on which the web material is to be wound is mounted on a spindle 3 between arms 4 of the machine frame in the usual way. The web W of film material is led over a guide roller 5 to be Wound into a reel 6. Three flexible nozzles 7 are mounted to pivot about an axis A-A so as to be capable of moving from the position shown at 7 to the position shown at 7" as the web material W is Wound. The flexible nozzles 7 taper towards the ends 8 so as to be introduced between the top layer of the reel 6 and the incoming web W. The interiors of the nozzles 7 are connected through a manifold 9 to a connection 10 leading to a vacuum pump. Although three flexible nozzles have been described, it is obvious that a larger or smaller number of nozzles can be used to suit the web width.

The nozzles are made from two pieces of thin sheet material either metal or film, which are suitably embossed or dimpled to provide air passages between them when laid together, or the nozzle can be made from small flexible tubes arranged between two sheets of film to locate them in position.

The width ofv the opening or openings in the nozzles may extend over the full web width but this is not necessary since quite a narrow air free portion of the reel is effective in stopping telescoping.

What I claim and desire to secure by Letters Patent is:

1. A web winding apparatus comprising means for Winding Web material on to a roll, a suction device arranged in close proximity to the nip where the web is being wound on to the roll to remove a laminar film of air therefrom and means mounting said suction device for move ment in response to a change in diameter of the roll to maintain said suction device in close proximity to the nip.

2. A web winding apparatus comprising means for Winding web material on to a roll, a suction device comprising a flexible nozzle arranged in close proximity to the nip Where the Web is being wound on to the roll to remove a laminar film of air therefrom and means mounting said suction device for movement in response to a change in diameter of the roll to maintain said suction device in close proximity to the nip.

3. A Web winding apparatus comprising means for winding web material on to a roll, a suction device comprising a plurality of flexible nozzles connected to a manifold arranged in close proximity to the nip where the web is being wound on to the roll to remove a laminar film of air therefrom and means mounting said suction device for movement in response to a change in diameter of the roll to main said suction device in close proximity to the nip. 

1. A WEB WINDING APPARATUS COMPRISING MEANS FOR WINDING WEB MATERIAL ON THE ROLL, A SUCTION DEVICE ARRANGED IN CLOSE PROXIMITY TO THE NIP WHERE THE WEB IS BEING WOUND ON TO THE ROLL TO REMOVE A LAMINAR FILM OF AIR THEREFROM AND MEANS MOUNTING SAID SUCTION DEVICE FOR MOVE- 